The lien was filed last month on the Batman Forever star's Santa Fe, N.M. property, which includes the 5,300-acre Pecos River Ranch he is trying to sell for $18.5 million. Kilmer, who has lived in New Mexico for two decades, originally put the ranch on the market for $33 million in 2009.

The IRS says Kilmer, who also starred in Top Gun, Tombstone and The Doors, owes $498,165 for his 2008 income taxes.